I find the Satan being viewed as a cast out angel in Christianity confusing when in Job Satan is clearly walking with God in heaven, making bets and talking about the piousness - or lack there of - of humans. How can God be having such a chat with someone he's cast out and why would Satan make a bet or hold to the rules if he's God's enemy? The whole book makes no sense with the cast out angels thing.
In Judaism, the one being cast down is simply who it is in the text, Nebuchadnezzar and Satan is simply an accusing/prosecuting angel [with the belief that we create accusers who will speak against us through our sins and angels to speak for us with our good deeds and they both weigh on us] and there is no eternal hellfire for the majority of humanity, just the World to Come which most will enter but those closer to God will enjoy more - if there is anything at all.
Honestly, having been in right wing Christianity and Orthodox Judaism for many years but having come out of it and no longer having a dog in this race, if you want to go for brutality, I'd still say the Christian version of Elohim is far more brutal - as I said, by their standards rules of humanity will die and spend eternity in fire and brimstone being tortured, requires several years of destroying the world and breaking humanity to reform it into paradise which won't even last [nothing like this in Judaism, in Judaism, the belief is that there are multiple potential very human Messiahs in each generation now and things will come to pass either when we've prepared the world or in our greatest hour of need and will continue]. Torah God may have been more ruthless to enemies while on Earth [and the keeping virgins things wasn't any kindness - if the brides to be didn't accept or still pinned for their loved ones after that month, they could be killed. For many it was likely just delaying the inevitable or spending the rest of their lives with that weighing on them] which resembles a lot of the Bronze Age deities ruthlessness but at least they had peace for the rest of eternity and at least most of humanity throughout time wasn't instantly going to hellfire for being born in the wrong place to hear about it. Most Torah sacrifices didn't even involve blood at all.
I often wonder if a lot of confusion in Christianity comes from the Torah not being a total text - it was designed to be read alongside with the oral tradition [which is why the phrase ''as you've been taught' or similar shows up so much often without any other guidelines, the traditions for things like kosher slaughter and such were in the oral tradition] which was later written down due to Rome and later burnt a lot due to the early Roman Church viewing it [and the earlier Christian writings from Egypt and eastern Africa] as heresy. Kinda hard to understand something if you only have less than half of it [the oral tradition, now written, is far larger] or when things kept being retranslated to fit changes [the early Roman Christian church did that a lot - thankfully most Christian Bibles these days have fixed most of oddities].